CSWIP 3.1 Exam Question and Answers

MMA 1.

Whic Wh ich h wel weldi ding ng pro proce cess ss is is cons consid ider ered ed to be be the the mos mostt vers versat atil ile? e?

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(a) SAW (b) TIG (c) MIG  MAG (d) MMA "ne o# the the adv advan antag tages es o# o# a m$lt m$lti%p i%pas asss MMA MMA we weld ld is is that that it gen genera erall& ll& pro prod$ d$ce cess a' (a) (b) (c) (d)

igh ten igh tensil silee str streng ength th igh ig h degr degree ee o# o# d$c d$ctil tilit& it& oars o arsee grai grain n str$ str$ct$ ct$re re *inee gr *in grain ain str str$c $ct$r t$ree

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MMA MM A ele elect ctro rode de ca can n be be gro gro$p $ped ed int into o thre threee mai main n t&pe t&pes. s. The These se are are''

0.

(a) ,a ,asic sic-- ell$l ell$los osic ic and and $ti $tile le (b) /e$ /e$traltral- ell$ ell$losi losicc and $ti $tile le (c) ,a ,asic sic-- ell$lo ell$losic sic and and ne$tr ne$tral al (d)) /o (d /one ne o# th thee abo above ve Move Mo veme ment nt o# o# the the arc arc b& ma magn gnet etic ic #or #orce cess in MM MMA A we weld ldin ing g is te term rmed ed'' (a) (a) (b)) (b (c) (d)

.

Whic Wh ich h o# th thee #ol ollo lowi wing ng st stat atem emen entt is is tr tr$e $e?? (a) (b) (c) (d)

6.

The core core wire in a MMA electrode has a higher higher melting melting point point than the the #l$2 3lectrode dc 4ve is $sed when welding welding with the MIG  MAG welding welding process process The A5 o# a carbon manganese manganese steel weld $s$all& $s$all& has a lower $ltimate $ltimate tensile strength strength than the the weld All o# the the abo above ve are tr$ tr$ee

A m$lt m$ltii r$n MMA b$tt weld mad madee on Mn stee steell consis consists ts o#  passes passes $sin $sing g 6mm 6mm electr electrode odes. s. A 1! pass pass weld made on the same 7oint $sing 0mm electrodes on the same material will' (a) (b) (c) (d)

8.

Arcc dev Ar devia iati tion on Arc misa Arc misalig lignm nmen entt Arc blow Arc e& e&e

ave a lower heat heat inp$t inp$t and a higher higher degree degree o# grain re#inement re#inement avee a lower av lower heat inp$t inp$t and and a coarser coarser grain grain str$ct str$ct$re $re ave a lower amo$nt amo$nt o# distortion distortion and and a higher higher degree degree o# grain grain re#inement re#inement ave a higher amo$nt amo$nt o# distortion distortion and and a lower lower degree o# grain re#inemen re#inementt

A t&pi t&pical cal mini minim$m m$m preh preheat eat temp temperat erat$re $re #or an an MMA MMA weld mad madee on stee steell with with a carb carbon on conte content nt o# 9.!+ 9.!+: : and and manganese content o# 1.+:' (a) (b)) (b (c)) (c (d)) (d

;reheat ;reh eat wo$ wo$ld ld not not norma normall& ll& be be rec A min minim im$m $m o# o# 199> 199>cc Abov Ab ovee !9 !9>c >c

.

Whic Wh ich h is o# o#te ten n the the har harde dest st par partt o# a m$l m$lti ti r$n r$n we weld ld mad madee $sin $sing g MMA? MMA?

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(a) Th (a) Thee A5 A5 o# th thee roo roott (b)) Th (b Thee A5 A5 o# th thee cap cap (c) The root (d) The ca cap Which Whi ch o# the #o #ollo llowin wing g weld welding ing pro proces cesse sess wo$ wo$ld ld &o &o$ $ e2p e2pect ect to $se a coll collet' et'

19.

(a) TIG  TAG (b) MIG  MAG (c) MMA (d)) Al (d Alll o# o# the the ab abov ovee Which Whi ch o# o# the the #ollo #ollowin wing g proc process esses es $se $se a co const nstan antt char charact acteri eristi stic? c?

(a) (b) (c) (d)

S$b%arc S$b% arc  1999 1999 amps amps-- MMAMMA- 3lectro 3lectro slag TIG  TAGTAG- S$b% S$b%arc arc B 1999 1999 amps amps-- 3lectro 3lectro slag slag S$b%arc S$b% arc  1999 amp ampss- MIG  MAGMAG- 3lectro 3lectro slag slag MIG  MAGMAG- S$b%arc S$b%arc B 199 1999 9 ampsamps- 3lectro 3lectro slag slag

11.. 11

Which Whic h o# the the #ollowin #ollowing g welding welding proce processe ssess $ses a resistiv resistivee heating heating s&stem s&stem to to achieve achieve weld weld metal metal deposi deposition tion??

1!.

(a) MMA (b) SAW (c)) 3l (c 3lec ectr tro o slag slag weld weldin ing g (d) e esis sistan tance ce spo spott weldi welding ng In MMA MMA weld weldinging- wha whatt parame parameter ter is is $sed $sed to con control trol the pen penetra etration tion into the base mat materia erial? l?

1+.

10.

(a) Colt (a) ltag agee (b)) Weld (b ldin ing g spe speed ed (c) Iro Iron n powd powder er in the co coast asting ing (d) $rrent In MMA weld weldinging- the the slag prod prod$ce $ced d can be be varied varied to s$it the the weldin welding g position position.. Which Which t&pe t&pe o# slag slag wo$ld wo$ld be be re